Improvement in harness mechanisms for looms



)AMES BTH.

Improvement in Harness Mechanism for Lnorns.

No. 121,842. Patented nec.12,1a71.

Z/zee/S` JAMES BOOTH.

improvement in Harness Mechanism for Looms.

N0. 121,842. Patented Dec. 12,187?L Y Q a. K A Q is F VIs\\\\\\\\\\\\\\\\\\\\ si Wzl'cnefssefs'. Xnven'cov.

UNITED STATES PATENT OFFICE.

JAMES BOOTH, OF POTTSTOWN, ASSIGNOR TO JOHN DOBSON, OF PHILADEL- PHIA, PENNSYLVANIA.

IMPROVEMENT IN HARNESS MECHANISMS FOR LOOMS.

Specification forming part of Letters Patent No. 121,842, dated December 12, 1871.

To all 'whom it may concern:

Be it known that I, JAMEs BOOTH, of Pottstown, Montgomery county, State of Pennsylvania, have invented certain Improvements in Power-Looms, of which the following is a specification:

The nature and obj ect of the invention is to afford a simple and readily-adj ustable device whereby the attendant can at anytime, and without loss of time or stopping the loom, change the operation of weaving from plain to twilled cloth, as the attendant may desire. My invention is particularly adapted to the manufacture of Balmoral skirts with a twilled border, and the balance of the skirt woven plain. The invention may be used for other classes of goods.

Figure l is a diagram showing the rollers and cords or straps, and the method of suspending` the heddles to the rollers; also, the method of connecting the lever B and spiral springs 5 and 6 to the rollers R1 and R2. Fig. 2 is a front view of so much of a power-loom as is required to illustrate my invention. Fig. 3 is a diagram illustrating the method of suspending' the heddles from the rollers and connecting them to the treadles. Fig. 4 is a view of the stand for guiding and retaining the lever B.

Similar letters and iigures in the drawing refer to like parts.

In Fig. 2, A A represent the loom-frame of an ordinary loom. At the top are three rollers, R R1 R2, which are constructed in the usual manner. To the rollers are suspended four heddles by cords or straps, to be hereinafter described. The bottoms of the heddles are connected to jacks and the jacks are connected to four treadles. (The jacks to the treadles are single strapped.) These four treadles are operated by a scroll-cam on the cam-shaft in the usual manner for producing a four.leaf twill. The heddles are connected to the rollers as follows The heddle marked lis the front or Alrst heddle when standing in front of the loom. Heddle 1 is connected to the top roller R by straps a a, and to roller R1 by straps c c. Heddle 2 is connected to roller R by straps o 0. In the diagrams, Figs. l and 3, the cords or straps are shown as seen on one end of the rollers R R1 R2. On the opposite ends is an equal number of straps, except the straps g, h, t', and a, attached to the rollers R1 and R2, which are shownin full number. Heddle 2 is also connected to roller R1 by straps d d. Heddle 3 is connected to roller R by straps b b and to roller R2 by straps e e. Heddle 4 is connected to roller R by straps k k and to the roller R2 by straps f f. Under the loom, and back of the heddles, fastened to the iloor, are two spiral springs, 5 and 6. The opposite end of spring 5 is fastened to roller B2 by the cord g. The spring 6 is fastened in a similar manner to roller B1 by cord h. The changing lever B is connected to rollers R1 and R2 by cords and n. (See Figs. l and 2.) The lever B is pivoted on a stud in a stand, D, fastened to a part of the loom-frame. (See Fig. 2.) In the stand D is a slot. At the top is a rest. At and fastened to the heels of each treadle is a spiral spring, 7, 8, 9, and 10. The opposite ends of these springs are fastened to the iloor or to the lower part of the loom-frame. It will be seen in Fig. 1 that each and all of the four heddles are connected to the top roller R by some of the straps. When the lever B is down, as shown in the drawing, the loom is set for working a four-leaf twillthat is, three up and one down-making the twill on the under side of the cloth as wove in the loom, it being understood that the heddle going down raises the remainin g three, and in making plain cloth the two going down raise the remaining two. In weaving the twill we tread the back heddle 4 irst, which will raise heddles 3 and 1, and heddle 2 will be raised by spring 6, fastened by cord h to roller R1, which is fastened to heddle 2 by straps d d. The next tread will be heddle 2, which will raise heddles 3 and 1. Heddle 4 will be raised by spiral spring 5, fastened by cord g to roller R2, which is fastened to heddle 4by straps f j'. The next tread will be heddle 3, which will raise 4 and 2. Heddle 1 will be raised by spiral spring 6, fastened by cord h to roller R1, which is fastened to heddle 1 by straps c c. The next tread Will be heddle 1, which will raise heddles 2 and 4. Heddle 3 will be raised by spiral spring 5, fastened by cord g to roller R2, which is fastened to heddle 3 by straps c e, and at each tread the depressing of one heddle will raise the other three when assisted by the spiral springs 5 and 6. When the attendant wishes to change from twilled to plain without stopping the loom, he raises the lever B in the guide D and catches it on the notch s, where it remains so long as it is desired to Weave plain. The raising of the handle of lever B tightens the straps n and and gives a part ot" l the change lever B is relieved from the catch s,

l and twillcd goods are produced, as before described.

a revolution to the rollers ll and ll'-`. which will make slack the straps c c, (I (l, e c, andfj', and draw the spring 5 andttight, and stop the niort-- ments of the rollers R1 and liz. in weaving plain is the depression ot heddles The til-st tread and 4. By means oi' the cam the hach hcddle 4 is depressed, which will raise heddles l and Si, and heddle 2 will be drawn down h one ot` the spiral springs. The second tread in making plain cloth is the depression ot` heddles l and 3. By means ot' the cam and treadle` heddle l is depressed, which will raise heddles 1.' and l and the spring on the heelof treadle will draw heddle3 down. lt will be understood that the treading is done on t'our treadles with a scroll-cam, and when the cam treads one ot' the treadles two heddles will be raised and the tourth will he drawn down, which will in all the treads make two up and two down, producing plain cloth so long as the Change lever remains on the catch-notch and Jche rollers R1 and R2 are thrown out ot'action. When itis desired to produce twilled cloth The described method of strapping may be va' ried and l do not confine myself to the placing the straps on the rollers as described; but each loom operator may Iarralnge them to suit his own particular fancy.

\\'hat I claim as new, and desire to secure by Letters Patent, is-

l. In a loom-harness mechanism, the combination oi' the lerer B and straps i and n for lche purpose ot' throwing` the rollers Rl and R2 out of action, as above described.

L. The combination ofthe spiral springs 5 and 4i, cords ll and g, and rollers Rl and R2 for raising the heddles, as described, for the above pur- Witnesses:

ROBERT WHITEHEAD,

MAsoN M. (JULVER. (95) 

